Then why does my map have a big blob on it that says EUROPE??? Checkmate. King me.

Yeah but most of the continent is under a unifying government with a shared currency (with a few exceptions, but paying in euros implies OP is still under EU jurisdiction)

Obviously nothing holds true for an entire region that won't also hold true for the majority of the world, but I feel like businesses in countries that use the euro are FAR more likely to regularly accept payment in cash or even require cash than counties in any part of the Pacific hemisphere